scholarly journals Stress related disorders and subsequent risk of life threatening infections: population based sibling controlled cohort study

BMJ ◽  
2019 ◽  
pp. l5784 ◽  
Author(s):  
Huan Song ◽  
Katja Fall ◽  
Fang Fang ◽  
Helga Erlendsdóttir ◽  
Donghao Lu ◽  
...  
Keyword(s):  
Cohort Study ◽  
Selective Serotonin Reuptake Inhibitors ◽  
Population Based ◽  
Age At Diagnosis ◽  
Swedish Population ◽  
Related Disorder ◽  
Hazard Ratios ◽  
Increased Risk ◽  
Life Threatening ◽  
Subsequent Risk

Abstract Objective To assess whether severe psychiatric reactions to trauma and other adversities are associated with subsequent risk of life threatening infections. Design Population and sibling matched cohort study. Setting Swedish population. Participants 144 919 individuals with stress related disorders (post-traumatic stress disorder (PTSD), acute stress reaction, adjustment disorder, and other stress reactions) identified from 1987 to 2013 compared with 184 612 full siblings of individuals with a diagnosed stress related disorder and 1 449 190 matched individuals without such a diagnosis from the general population. Main outcome measures A first inpatient or outpatient visit with a primary diagnosis of severe infections with high mortality rates (ie, sepsis, endocarditis, and meningitis or other central nervous system infections) from the Swedish National Patient Register, and deaths from these infections or infections of any origin from the Cause of Death Register. After controlling for multiple confounders, Cox models were used to estimate hazard ratios of these life threatening infections. Results The average age at diagnosis of a stress related disorder was 37 years (55 541, 38.3% men). During a mean follow-up of eight years, the incidence of life threatening infections per 1000 person years was 2.9 in individuals with a stress related disorder, 1.7 in siblings without a diagnosis, and 1.3 in matched individuals without a diagnosis. Compared with full siblings without a diagnosis of a stress related disorder, individuals with such a diagnosis were at increased risk of life threatening infections (hazard ratio for any stress related disorder was 1.47 (95% confidence intervals1.37 to 1.58) and for PTSD was 1.92 (1.46 to 2.52)). Corresponding estimates in the population based analysis were similar (1.58 (1.51 to 1.65) for any stress related disorder, P=0.09 for difference between sibling and population based comparison, and 1.95 (1.66 to 2.28) for PTSD, P=0.92 for difference). Stress related disorders were associated with all studied life threatening infections, with the highest relative risk observed for meningitis (sibling based analysis 1.63 (1.23 to 2.16)) and endocarditis (1.57 (1.08 to 2.30)). Younger age at diagnosis of a stress related disorder and the presence of psychiatric comorbidity, especially substance use disorders, were associated with higher hazard ratios, whereas use of selective serotonin reuptake inhibitors in the first year after diagnosis of a stress related disorder was associated with attenuated hazard ratios. Conclusion In the Swedish population, stress related disorders were associated with a subsequent risk of life threatening infections, after controlling for familial background and physical or psychiatric comorbidities.

Headache as a risk factor for dementia: A prospective population-based study

Cephalalgia ◽  
2013 ◽  
Vol 34 (5) ◽  
pp. 327-335 ◽  
Author(s):  
Knut Hagen ◽  
Eystein Stordal ◽  
Mattias Linde ◽  
Timothy J Steiner ◽  
John-Anker Zwart ◽  
...  
Keyword(s):  
Risk Factor ◽  
Cohort Study ◽  
Cox Regression ◽  
Subsequent Development ◽  
Population Based ◽  
Health Study ◽  
Cox Regression Analysis ◽  
Hazard Ratios ◽  
Increased Risk

Background Headache has not been established as a risk factor for dementia. The aim of this study was to determine whether any headache was associated with subsequent development of vascular dementia (VaD), Alzheimer’s disease (AD) or other types of dementia. Methods This prospective population-based cohort study used baseline data from the Nord-Trøndelag Health Study (HUNT 2) performed during 1995–1997 and, from the same Norwegian county, a register of cases diagnosed with dementia during 1997–2010. Participants aged ≥20 years who responded to headache questions in HUNT 2 were categorized (headache free; with any headache; with migraine; with nonmigrainous headache). Hazard ratios (HRs) for later inclusion in the dementia register were estimated using Cox regression analysis. Results Of 51,383 participants providing headache data in HUNT 2, 378 appeared in the dementia register during the follow-up period. Compared to those who were headache free, participants with any headache had increased risk of VaD ( n = 63) (multivariate-adjusted HR = 2.3, 95% CI 1.4–3.8, p = 0.002) and of mixed dementia (VaD and AD ( n = 52)) (adjusted HR = 2.0, 95% CI 1.1–3.5, p = 0.018). There was no association between any headache and later development of AD ( n = 180). Conclusion In this prospective population-based cohort study, any headache was a risk factor for development of VaD.

scholarly journals Trends in self-poisoning and psychotropic drug use in people aged 5–19 years: a population-based retrospective cohort study in Australia

BMJ Open ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. e026001 ◽  
Author(s):  
Rose Cairns ◽  
Emily A Karanges ◽  
Anselm Wong ◽  
Jared A Brown ◽  
Jeff Robinson ◽  
...  
Keyword(s):  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Selective Serotonin Reuptake Inhibitors ◽  
Age Groups ◽  
Cohort Effect ◽  
Population Based ◽  
Psychotropic Medicine ◽  
Increased Risk ◽  
Self Harm

ObjectivesTo characterise trends in self-poisoning and psychotropic medicine use in young Australians.DesignPopulation-based retrospective cohort study.SettingCalls taken by the New South Wales and Victorian Poisons Information Centres (2006–2016, accounting for 70% of Australian poisoning calls); medicine dispensings in the 10% sample of Australian Pharmaceutical Benefits Scheme data (July 2012 to June 2016).ParticipantsPeople aged 5–19 years.Main outcome measuresYearly trends in intentional poisoning exposure calls, substances taken in intentional poisonings, a prevalence of psychotropic use (dispensing of antidepressants, antipsychotics, benzodiazepines and medicines for attention deficit hyperactivity disorder (ADHD)).ResultsThere were 33 501 intentional poisonings in people aged 5–19 years, with an increase of 8.39% per year (95% CI 6.08% to 10.74%, p<0.0001), with a 98% increase overall, 2006–2016. This effect was driven by increased poisonings in those born after 1997, suggesting a birth cohort effect. Females outnumbered males 3:1. Substances most commonly taken in self-poisonings were paracetamol, ibuprofen, fluoxetine, ethanol, quetiapine, paracetamol/opioid combinations, sertraline and escitalopram. Psychotropic dispensing also increased, with selective serotonin reuptake inhibitors (SSRIs) increasing 40% and 35% July 2012 to June 2016 in those aged 5–14 and 15–19, respectively. Fluoxetine was the most dispensed SSRI. Antipsychotics increased by 13% and 10%, while ADHD medication dispensing increased by 16% and 10%, in those aged 5–14 and 15–19, respectively. Conversely, dispensing of benzodiazepines to these age groups decreased by 4% and 5%, respectively.ConclusionsOur results signal a generation that is increasingly engaging in self-harm and is increasingly prescribed psychotropic medications. These findings indicate growing mental distress in this cohort. Since people who self-harm are at increased risk of suicide later in life, these results may foretell future increases in suicide rates in Australia.

scholarly journals Increased risk of secondary lung cancer in patients with tuberculosis: A nationwide, population-based cohort study

PLoS ONE ◽  
2021 ◽  
Vol 16 (5) ◽  
pp. e0250531
Author(s):  
Li-Ju Ho ◽  
Hung-Yi Yang ◽  
Chi-Hsiang Chung ◽  
Wei-Chin Chang ◽  
Sung-Sen Yang ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Cohort Study ◽  
Large Scale ◽  
Primary Lung Cancer ◽  
Significant Risk ◽  
Population Based ◽  
Chronic Obstructive ◽  
Primary Cancer ◽  
Increased Risk ◽  
Subsequent Risk

Background Tuberculosis (TB) presents a global threat in the world and the lung is the frequent site of metastatic focus. A previous study demonstrated that TB might increase primary lung cancer risk by two-fold for more than 20 years after the TB diagnosis. However, no large-scale study has evaluated the risk of TB and secondary lung cancer. Thus, we evaluated the risk of secondary lung cancer in patients with or without tuberculosis (TB) using a nationwide population-based dataset. Methods In a cohort study of 1,936,512 individuals, we selected 6934 patients among patients with primary cancer and TB infection, based on the International Classification of Disease (ICD-p-CM) codes 010–011 from 2000 to 2015. The control cohort comprised 13,868 randomly selected, propensity-matched patients (by age, gender, and index date) without TB exposure. Using this adjusted date, a possible association between TB and the risk of developing secondary lung cancer was estimated using a Cox proportional hazards regression model. Results During the follow-up period, secondary lung cancer was diagnosed in 761 (10.97%) patients with TB and 1263 (9.11%) patients without TB. After adjusting for covariates, the risk of secondary lung cancer was 1.67 times greater among primary cancer in the cohort with TB than in the cohort without TB. Stratification revealed that every comorbidity (including diabetes, hypertension, cirrhosis, congestive heart failure, cardiovascular accident, chronic kidney disease, chronic obstructive pulmonary disease) significantly increased the risk of secondary lung cancer when comparing the TB cohort with the non-TB cohort. Moreover, the primary cancer types (including head and neck, colorectal cancer, soft tissue sarcoma, breast, kidney, and thyroid cancer) had a more significant risk of becoming secondary lung cancer. Conclusion A significant association exists between TB and the subsequent risk for metastasis among primary cancers and comorbidities. Therefore, TB patients should be evaluated for the subsequent risk of secondary lung cancer.

Cancer Risk in Patients with Autoimmune Hepatitis: A Nationwide Population-Based Cohort Study with Histopathology

2021 ◽  
Author(s):  
Rajani Sharma ◽  
Elizabeth C Verna ◽  
Tracey G Simon ◽  
Jonas Söderling ◽  
Hannes Hagström ◽  
...  
Keyword(s):  
Cohort Study ◽  
General Population ◽  
Cancer Risk ◽  
Autoimmune Hepatitis ◽  
Cox Regression ◽  
Population Based ◽  
Swedish Population ◽  
Non Melanoma Skin Cancer ◽  
Incident Cancer ◽  
Increased Risk

Abstract We aimed to determine the risk of incident cancer in autoimmune hepatitis (AIH) compared to the general population and siblings. AIH was defined by the presence of a medical diagnosis of AIH and a liver biopsy in a nationwide Swedish population-based cohort study. We identified 5,268 adults with AIH diagnosed 1969-2016 and 22,996 matched general population reference individuals and 4,170 sibling comparators. Using Cox regression, hazard ratios (HRs) were determined for any incident cancer and sub-types determined from the Swedish Cancer Register. During follow-up, a cancer diagnosis was made in 1,119 individuals with AIH (17.2/1000 person-years) and 4,450 reference individuals (12.0/1000 person-years). This corresponded to an HR of 1.53 (95%CI: 1.42,1.66). Cancer risk was highest in those with cirrhosis. There was a 29.18-fold increased risk of hepatocellular carcinoma (HCC) (95%CI, 17.52,48.61). The annual incidence risk of HCC in individuals with AIH who had cirrhosis was 1.1% per year. AIH was also linked to non-melanoma skin cancer (HR=2.69) and lymphoma (HR=1.89). Sibling analyses yielded similar risk estimates for any cancer (HR=1.84) and HCC (HR=23.10). AIH is associated with an increased risk of any cancer, in particular, HCC and extra-hepatic malignancies. The highest risk for cancer, especially HCC, is in patients with cirrhosis.

scholarly journals Metformin use and risk of gastric adenocarcinoma in a Swedish population-based cohort study

2019 ◽  
Vol 121 (10) ◽  
pp. 877-882 ◽  
Author(s):  
Jiaojiao Zheng ◽  
Shao-Hua Xie ◽  
Giola Santoni ◽  
Jesper Lagergren
Keyword(s):  
Cohort Study ◽  
Gastric Adenocarcinoma ◽  
Population Based ◽  
Matched Cohort ◽  
Swedish Population ◽  
Cox Proportional Hazard ◽  
Hazard Ratios ◽  
Cox Proportional Hazard Regression ◽  
Treatment Use

Abstract Background Whether or not the use of metformin decreases the risk of gastric adenocarcinoma is unclear. Methods This was a population-based cohort study in 2005–2015. Associations between metformin use and gastric non-cardia and cardia adenocarcinomas were examined within two cohorts; a diabetes cohort of participants using anti-diabetes medications, and a matched cohort of common-medication users, where metformin non-users were frequency matched (10:1) with metformin users for sex and age. Multivariable Cox proportional hazard regression analyses provided hazard ratios (HR) and 95% confidence intervals (CI), adjusting for sex, age, calendar year, comorbidity, Helicobacter pylori eradication treatment, use of non-steroidal anti-inflammatory drugs or aspirin and use of statins. Results During the follow-up for a median of 5.8 years, 892 (0.1%) participants in the diabetes cohort and 6395 (0.1%) participants in the matched cohort of common-medication users developed gastric adenocarcinoma. Metformin users had no significantly decreased risk of gastric non-cardia adenocarcinoma (diabetes cohort: HR 0.93, 95% CI 0.78–1.12; matched cohort: HR 1.30, 95% CI 1.18–1.42) or cardia adenocarcinoma (diabetes cohort: HR 1.49, 95% CI 1.09–2.02; matched cohort: HR 1.58, 95% CI 1.38–1.81) compared with non-users in both cohorts. Conclusions This cohort study with <10 years of follow-up suggests metformin use may not prevent gastric adenocarcinoma.

scholarly journals The risk of psoriasis in patients with uveitis: A nationwide population-based cohort study

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0255492
Author(s):  
Yu-Yen Chen ◽  
Hsin-Hua Chen ◽  
Tzu-Chen Lo ◽  
Pesus Chou
Keyword(s):  
Cohort Study ◽  
Psoriatic Arthritis ◽  
Cox Regression ◽  
Population Based ◽  
Severe Psoriasis ◽  
Study Cohort ◽  
Research Database ◽  
Insurance Cost ◽  
Hazard Ratios ◽  
Increased Risk

Objective To evaluate whether the risk of subsequent psoriasis and psoriatic arthritis development is increased in patients with uveitis. Methods In Taiwan’s national health insurance research database, we identified 195,125 patients with new-onset uveitis between 2001 and 2013. We randomly selected 390,250 individuals without uveitis who were matched 2:1 to uveitis cases based on age, sex and year of enrolment. The characteristics of the two groups were compared. Using multivariate Cox regression, hazard ratios (HRs) for psoriasis or psoriatic arthritis corresponding to uveitis were computed after adjustment for age, sex, insurance cost and comorbidities. In subgroup analyses, separate HRs for mild psoriasis, severe psoriasis and psoriatic arthritis were calculated. Results The mean age of the study cohort was 50.2 ± 17.2 years. Hypertension, diabetes, hyperlipidaemia and obesity were more prevalent in the uveitis group (all p < 0.0001). The hazard of psoriasis or psoriatic arthritis development was significantly greater in the uveitis group than in the non-uveitis group (p < 0.0001); this increased risk persisted after adjustment for confounders [adjusted HR = 1.41; 95% confidence interval (CI), 1.33–1.48]. Adjusted HRs showed an increasing trend from mild psoriasis (1.35; 95% CI, 1.28–1.44) to severe psoriasis (1.59; 95% CI, 1.30–1.94) and psoriatic arthritis (1.97; 95% CI, 1.60–2.42). Conclusions This nationwide population-based cohort study revealed that patients with uveitis have an increased risk of subsequent psoriasis or psoriatic arthritis development.

scholarly journals Association between living with children and outcomes from covid-19: OpenSAFELY cohort study of 12 million adults in England

BMJ ◽  
2021 ◽  
pp. n628 ◽  
Author(s):  
Harriet Forbes ◽  
Caroline E Morton ◽  
Seb Bacon ◽  
Helen I McDonald ◽  
Caroline Minassian ◽  
...  
Keyword(s):  
Cohort Study ◽  
Intensive Care ◽  
Hospital Admissions ◽  
Absolute Risk ◽  
Population Based ◽  
Intensive Care Admission ◽  
Risk Of Death ◽  
Hazard Ratios ◽  
Increased Risk ◽  
The Uk

Abstract Objective To investigate whether risk of infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and outcomes of coronavirus disease 2019 (covid-19) differed between adults living with and without children during the first two waves of the UK pandemic. Design Population based cohort study, on behalf of NHS England. Setting Primary care data and pseudonymously linked hospital and intensive care admissions and death records from England, during wave 1 (1 February to 31 August 2020) and wave 2 (1 September to 18 December 2020). Participants Two cohorts of adults (18 years and over) registered at a general practice on 1 February 2020 and 1 September 2020. Main outcome measures Adjusted hazard ratios for SARS-CoV-2 infection, covid-19 related admission to hospital or intensive care, or death from covid-19, by presence of children in the household. Results Among 9 334 392 adults aged 65 years and under, during wave 1, living with children was not associated with materially increased risks of recorded SARS-CoV-2 infection, covid-19 related hospital or intensive care admission, or death from covid-19. In wave 2, among adults aged 65 years and under, living with children of any age was associated with an increased risk of recorded SARS-CoV-2 infection (hazard ratio 1.06 (95% confidence interval 1.05 to 1.08) for living with children aged 0-11 years; 1.22 (1.20 to 1.24) for living with children aged 12-18 years) and covid-19 related hospital admission (1.18 (1.06 to 1.31) for living with children aged 0-11; 1.26 (1.12 to 1.40) for living with children aged 12-18). Living with children aged 0-11 was associated with reduced risk of death from both covid-19 and non-covid-19 causes in both waves; living with children of any age was also associated with lower risk of dying from non-covid-19 causes. For adults 65 years and under during wave 2, living with children aged 0-11 years was associated with an increased absolute risk of having SARS-CoV-2 infection recorded of 40-60 per 10 000 people, from 810 to between 850 and 870, and an increase in the number of hospital admissions of 1-5 per 10 000 people, from 160 to between 161 and 165. Living with children aged 12-18 years was associated with an increase of 160-190 per 10 000 in the number of SARS-CoV-2 infections and an increase of 2-6 per 10 000 in the number of hospital admissions. Conclusions In contrast to wave 1, evidence existed of increased risk of reported SARS-CoV-2 infection and covid-19 outcomes among adults living with children during wave 2. However, this did not translate into a materially increased risk of covid-19 mortality, and absolute increases in risk were small.

scholarly journals Cancer and the risk of COVID-19 diagnosis, hospitalisation, and death: a population-based multi-state cohort study including 4,618,377 adults in Catalonia, Spain

2021 ◽  
Author(s):  
Elena Roel ◽  
Andrea Pistillo ◽  
Martina Recalde ◽  
Sergio Fernandez-Bertolin ◽  
Maria Aragon ◽  
...  
Keyword(s):  
Cohort Study ◽  
Smoking Status ◽  
Population Based ◽  
High Risk Population ◽  
Cancer Type ◽  
Non Melanoma Skin Cancer ◽  
Hazard Ratios ◽  
Increased Risk ◽  
History Of ◽  
One Year

Objectives: To investigate the associations between cancer and risk of outpatient COVID-19 diagnosis, hospitalisation, and COVID-19-related death, overall and by years since cancer diagnosis (<1-year, 1-5-years, >5-years), sex, age, and cancer type. Design: Population-based cohort study Setting: Primary care electronic health records including ~80% of the population in Catalonia, Spain, linked to hospital and mortality records between 1 March and 6 May 2020. Participants: Individuals aged ≥18 years with at least one year of prior medical history available from the general population. Cancer was defined as any prior diagnosis of a primary invasive malignancy excluding non-melanoma skin cancer. Main outcome measures: Cause-specific hazard ratios (aHR) with 95% confidence intervals for each outcome. Estimates were adjusted by age, sex, deprivation, smoking status, and comorbidities. Results: We included 4,618,377 adults, of which 260,667 (5.6%) had a history of cancer. Patients with cancer were older and had more comorbidities than cancer-free patients. A total of 98,951 individuals (5.5% with cancer) were diagnosed and 6,355 (16.4% with cancer) were directly hospitalised (no prior diagnosis) with COVID-19. Of those diagnosed, 6,851 were subsequently hospitalised (10.7% with cancer) and 3,227 died without being hospitalised (18.5% with cancer). Among those hospitalised, 1,963 (22.5% with cancer) died. Cancer was associated with an increased risk of COVID-19 diagnosis (aHR: 1.08; 95% confidence interval [1.05-1.11]); direct COVID-19 hospitalisation (1.33 [1.24-1.43]); and death following a COVID-19 hospitalisation (1.12 [1.01-1.25]). These associations were stronger for patients recently diagnosed with cancer, aged <70 years, and with haematological cancers. Conclusions: Patients recently diagnosed with cancer, aged <70 years, or with haematological cancers are a high-risk population for COVID-19 diagnosis and severity. These patients should be prioritised in COVID-19 vaccination campaigns and continued non-pharmaceutical interventions.

scholarly journals Hysterectomies are associated with an increased risk of osteoporosis and bone fracture: A population-based cohort study

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243037
Author(s):  
Ying-Ting Yeh ◽  
Pei-Chen Li ◽  
Kun-Chi Wu ◽  
Yu-Cih Yang ◽  
Weishan Chen ◽  
...  
Keyword(s):  
Cohort Study ◽  
Vertebral Fracture ◽  
Bone Fracture ◽  
Comparison Group ◽  
Bone Fractures ◽  
Estrogen Therapy ◽  
Population Based ◽  
Hazard Ratios ◽  
Increased Risk

Aim This study investigated the risk of osteoporosis or bone fractures (vertebrae, hip and others) in hysterectomized women in Taiwan. Materials and methods This is a retrospective population-based cohort study from 2000 to 2013. Women aged ≥30 years who underwent hysterectomy between 2000 and 2012 were included in this study. The comparison group was randomly selected from the database with a 1:4 matching with age and index year. Incidence rate and hazard ratios of osteoporosis and bone fracture between hysterectomized women and the comparison group were calculated. Cox proportional hazard regressions were used to calculate hazard ratios (HRs) and 95% confidence intervals (CIs). Results We identified 9,189 hysterectomized women and 33,942 age-matched women without a hysterectomy. All women were followed for a median time of about 7 years. The adjusted hazard ratio (aHR) of subsequent osteoporosis or bone fracture was higher in the hysterectomy women (2.26, 95% confidence interval [CI] = 2.09–2.44) than in the comparison group. In the subgroup analysis, oophorectomy and estrogen therapy increase the risk of osteoporosis or fracture in both groups. Regarding the fracture site, the aHR of vertebral fracture (4.92, 95% CI = 3.78–6.40) was higher in the hysterectomized women than in the comparison group. As follow-up time increasing, the aHR of vertebral fracture in hysterectomized women were 4.33 (95% CI = 2.99–6.28), 3.89 (95% CI = 2.60–5.82) and 5.42 (95% CI = 2.66–11.01) for <5, 5–9 and ≥9 years of follow-up, respectively. Conclusions In conclusion, we found that hysterectomized women might be associated with increased risks of developing osteoporosis or bone fracture.

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